perf counters: consolidate hw_perf save/restore APIs

Impact: cleanup

Rename them to better match up the usual IRQ disable/enable APIs:

 hw_perf_disable_all()  => hw_perf_save_disable()
 hw_perf_restore_ctrl() => hw_perf_restore()

Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/kernel/cpu/perf_counter.c b/arch/x86/kernel/cpu/perf_counter.c
index 43c8e9a..3e1dbeb 100644
--- a/arch/x86/kernel/cpu/perf_counter.c
+++ b/arch/x86/kernel/cpu/perf_counter.c
@@ -118,13 +118,13 @@
 	wrmsr(MSR_CORE_PERF_GLOBAL_CTRL, perf_counter_mask, 0);
 }
 
-void hw_perf_restore_ctrl(u64 ctrl)
+void hw_perf_restore(u64 ctrl)
 {
 	wrmsr(MSR_CORE_PERF_GLOBAL_CTRL, ctrl, 0);
 }
-EXPORT_SYMBOL_GPL(hw_perf_restore_ctrl);
+EXPORT_SYMBOL_GPL(hw_perf_restore);
 
-u64 hw_perf_disable_all(void)
+u64 hw_perf_save_disable(void)
 {
 	u64 ctrl;
 
@@ -132,7 +132,7 @@
 	wrmsr(MSR_CORE_PERF_GLOBAL_CTRL, 0, 0);
 	return ctrl;
 }
-EXPORT_SYMBOL_GPL(hw_perf_disable_all);
+EXPORT_SYMBOL_GPL(hw_perf_save_disable);
 
 static inline void
 __x86_perf_counter_disable(struct hw_perf_counter *hwc, unsigned int idx)